fractor out connector sceleton common to front and back

2 files changed, 37 insertions, 25 deletions

diff --git a/connector.scad b/connector.scad
new file mode 100644
index 0000000..384d692
--- /dev/null
+++ b/connector.scad
@@ -0,0 +1,35 @@
+// common base module for front and back connector
+
+include <parameters.scad>
+
+use <nipple.scad>
+
+module connector_half(
+  border_side = false,
+  border_top = false,
+  border_bottom = false
+) {	 
+  // vertical bar
+  cube([bar_thickness/2, bar_thickness, tray_height]);
+
+  if (!border_side) {
+    // upper horizontal bar
+    translate([0, 0, tray_height - bar_thickness])
+      cube([tray_width / 2, bar_thickness, bar_thickness]);
+
+    // lower horizontal bar
+    cube([bar_thickness/2 + rail_width + pla_epsilon, bar_thickness, bar_thickness]);
+
+    // vertical thread bold receiver (extremal)
+    translate([tray_width/2 - bar_thickness, bar_thickness, tray_height-bar_thickness])
+      cube([bar_thickness, bar_thickness, bar_thickness]);
+  }
+
+  // vertical thread bold receiver (central)
+  translate([0, bar_thickness, tray_height-bar_thickness])
+    cube([bar_thickness/2, bar_thickness, bar_thickness]);
+
+  // male downward positioning nippel
+  if (!border_bottom)
+    translate([rail_width, bar_thickness / 2, 0]) nipple();
+}
diff --git a/connector_front.scad b/connector_front.scad
index 434729f..b3bacb8 100644
--- a/connector_front.scad
+++ b/connector_front.scad
@@ -1,5 +1,6 @@
 include <parameters.scad>
 
+use <connector.scad>
 use <nipple.scad>
 use <rail.scad>
 
@@ -8,31 +9,7 @@ module front_connector_half(
   border_top = false,
   border_bottom = false
 ) difference() {
-  union() {	 
-    // vertical bar
-    cube([bar_thickness/2, bar_thickness, tray_height]);
-
-    if (!border_side) {
-      // upper horizontal bar
-      translate([0, 0, tray_height - bar_thickness])
-        cube([tray_width / 2, bar_thickness, bar_thickness]);
-
-      // lower horizontal bar
-      cube([bar_thickness/2 + rail_width + pla_epsilon, bar_thickness, bar_thickness]);
-
-      // vertical thread bold receiver (extremal)
-      translate([tray_width/2 - bar_thickness, bar_thickness, tray_height-bar_thickness])
-        cube([bar_thickness, bar_thickness, bar_thickness]);
-    }
-
-    // vertical thread bold receiver (central)
-    translate([0, bar_thickness, tray_height-bar_thickness])
-      cube([bar_thickness/2, bar_thickness, bar_thickness]);
-
-    // male downward positioning nippel
-    if (!border_bottom)
-      translate([rail_width, bar_thickness / 2, 0]) nipple();
-  }
+  connector_half(border_side, border_top, border_bottom);
 
   // receiver for rail
   if (!border_side)